Overview
| brand | Does it support processing customization | ||
| Imported or not | Dust concentration at the outlet | ||
| outlet temperature | Dust removal rate | ||
| Processing air volume | Treatment concentration | ||
| Gas processing capacity | voltage | ||
| Power supply mode | Power frequency | ||
| Rated frequency | Air outlet size | ||
| Negative ion concentration | operational principle | ||
| Work resistance | power | ||
| specifications | complete | Filtering speed | |
| Inlet concentration | Purification rate | ||
| Air purifier air volume | Airspeed | ||
| control mode | category | ||
| Ringmann blackness | Ignition temperature | ||
| Applicable fields | Applicable area | ||
| Desulfurization rate | Overall dimensions | ||
| model | colour | Metallic white | |
| Liquid to gas ratio | noise | ||
| Replacement air volume | type | ||
| weight | Friction loss | ||
| Customized or not | Customizable | Production process | automation |
| Section shape | Circular Oval | Applicable scope | Small and medium-sized boilers |
| material quality | Titanium steel composite pipe | purpose | Waste heat recovery |
| Usage Scenario | Small and medium-sized boilers | Air preheater category | Tubular |
| Pipe type | Circular tube, elliptical tube | Executive standards | National standard |
| Quality level | excellent | production cycle | 10-30 days |
| structural style | Horizontal, vertical | Applicable fuel | Coal and biomass particles |
| Sellable region | nationwide | Shipping method | Logistics and automobile transportation |
Product Details
Causes of Cold End Corrosion
The sulfur in the fuel will generate sulfur dioxide after combustion, and a small amount of sulfur dioxide will further oxidize to form Sulfur trioxide. Because Sulfur trioxide exists in the flue gas, the dew point temperature of the flue gas will rise, that is, Sulfur trioxide will combine with water vapor in the flue gas to generate sulfuric acid vapor. When flue gas containing sulfuric acid vapor flows through a low-temperature heating surface, and the metal wall temperature of the heating surface is lower than the dew point of sulfuric acid vapor, sulfuric acid dew forms on the surface of the heating surface metal and corrodes it.
Low temperature corrosion hazards
Strong low-temperature corrosion can cause the rupture of metal on the hot surface of the air preheater, causing air leakage into the flue gas, affecting the heat transfer efficiency of the air preheater, worsening the combustion of the supply air, reducing the efficiency of the boiler, and affecting the economic operation of the power plant.
Solution
The Shandong Hongjiang R&D team has conducted in-depth research and experiments on such issues, solving the problem from the source of materials, and developed composite pipes that are applied to the cold end of air preheaters to prevent any leakage and damage to the blowing belt. For locations prone to corrosion, key protection measures should be taken to extend the overall service life of the heat exchange tube. Different specifications can be customized according to needs, which has a higher cost-effectiveness compared to the replacement of the entire pipe material, effectively solving the problem of cold end corrosion in the air preheater.
Scheme Type
Option 1: Ordinary carbon steel+cold end composite pipe
Option 2: Corden steel+cold end composite pipe
Option 3: Enamel pipe+cold end sleeve